Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22de6763eaef11fa8990ab3fef3a3d1e176e556beb80f1092af2794ae01ae79b' 
  AND token = 'hnAPUuflZ7sAfDPmEsLD9yheEue87LwGGTM/Fjj6SMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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