Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7471e8b4fe8ca00a341b2a59aba5b65dba3983448ae9eeb2993ba65201dfa65' 
  AND token = 'FeTabuIXjJDy64R7umvX4WwDjK/2M4dA0hlct5e8j/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}