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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'eeb98591a242aaafcee87c5ab7f988b0c2dfc21479f45dfc9db86006bd9a1d16' 
  AND token = 'P07jLqVuj2O9eStU21TeJUkj0MmHW4as0eu3Y5z1JQ4=' 
  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"
    }
  }
}