Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e6862d9e45601c853c938a698a4b1a698a5bb783673a58b68aa773cc127ad174' 
  AND token = '8CO/d70BSTwBMCM7ZDJkdJb4T3K7XT6zri6Uh5oeQcU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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