Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97159ccddabd877f44a2409ed6a88cc6390ef26d79fe35a27adfd6429edd25bf' 
  AND token = 'aGCSYzh2FInDao4uljNW7k6zcslDN+qNnldL3wAy4R8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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