Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88e14794edbf8ee5ec89f040d95198ed34be1241cd6ae282c061e59284ace08c' 
  AND token = 'sr1otu1zoosEwSUrwFkj/PhzgeQlJ01DYHGsPT6uod0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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