Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '625ff73a3d785cb665ede515f2be585f469a2d2f9cd67e6b401d60a5c6336067' 
  AND token = '5ZDdq//9Rl4lagUhIQtXD4c47PCyyhD2IyICbAgA/uo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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