Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af20acd97fcec7a383cd5804daaf95306abd417f93afabdd7b338aeb5240fb86' 
  AND token = 'sCjbHmBuFXM42SpWgGFOzBdq8InnDtTgyZl189VdMy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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