Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c237fe411db609e7bf5dc7c539b4ed35740488636caa6bf6c327744e51702ed' 
  AND token = '1fLeg55O83RygU6WA6rPoadsrapVZtqdfZDnct6QR4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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