Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '40234b66957b3b3788190426d6351bc6b2cea211327d300467fecc4ca0b6c0c3' 
  AND token = 'V6N1dpUG2No5EY2SpvkjjDBTJuNFfun8L3qp//HLOX8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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