Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ce505bb0361d188abd97d44755035751feff82158bdd5bd0be13707d778d13c' 
  AND token = 'tOCE4hm8XqpikqNT9oRPRR0K5VqSRn2K7mHHwaM+29I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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