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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f87cab1d68e0329d73cb2dc6c6cde92e9092b840e907c993dbeb6997c5569ab8' 
  AND token = 'vlmuRZuX3PPGmsMOIWK3fUacce5HZjZrsmg6O0tH5mg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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