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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '413b3900293e600f79887cc1028677928ca8a5fd77e2e54e8b1baa044571b986' 
  AND token = 'ZfNGW8yhQo2IdSv0xfQmqGUhv0yACaZ4YL8FqJ/B73c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}