Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64239379dc98d302741f558906c8d2f81b3d29f111d5b7de7e948e48a70f242e' 
  AND token = 'kUHpCZAamjnZlDbQlyx7Sb7oUE67vDuSCEPKpdE70aA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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