Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c34b092b809a4fa83e1fc22ffe8a96127354bf3e87c782bf9346e9aa08a2c03c' 
  AND token = '5ZKJjPw7DlAAcQysBTy5elZaXKVjb0/uEo49R8J7ZnQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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