Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ea5b7a26aded280219518bdb4ddbd2a9ee31114bc93086a6cb49be5d0c65e719' 
  AND token = 'NrAdoAishSpY1PojGA1LYhrUSzXf9uNk03qPM7naFuE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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