Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e0065a4c312a81a0903942964d476c8906feed620538b85e1b495584c9c73f7' 
  AND token = 'W7099tFlvXFFHFXuo0CkAmv32daKqtZRs5qvI5e/uYg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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