Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07eab07d5fbb419f0e39ccc7f57b7abe8a63047ab2a7ee7c60d44c86b4523483' 
  AND token = '7/78UzrRb5pHF8TJErYrJRS+0ry+iP7dbnUuR4RiGB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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