Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3bbbe10635ddab3efdd2bfb728916a1f2bfb672db571a545c9d204ec04cf8bea' 
  AND token = 'eQqPc1WxtgEseNJDYc91nTNuqep9KUQQ8kv2CKf2YyQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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