Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa45bebf262807738c51f5b212ed96a52cebf0ed750d1b407295796fc00d9e64' 
  AND token = 'L8d0eqPhffeMBDW2yiHrho3ZQZqQTu8Y4JqQxT/SYpk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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