Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2d448b60c451c903b033e7218d5325983ca7133f0133276cf5f89fd83a521a6' 
  AND token = 'AsrzNe3JYyZec7Ei3UKU5O+vPgpCF1rHe+w1hpDcqlk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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