Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0acfe51e6409e22c43ec4e3dcb6061ce1b1efad73bd4a79ca7544fffd2915825' 
  AND token = '4eAJWqeQ7TA9XN308pWdmQPYDWoEHgDrJzZ83M1TPB0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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