Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '087e43230d35855ca6d540bca7ae891d2ef3aa557080c6f57fb976a5d70ff3cf' 
  AND token = '9MFIkhw2fsWKD8Kq2wJ4rrn2m6b3lcHReJ2sUO/bJI4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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