Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69124fbe035e64f82544c98ded9fb8ea99428133f02a57189fc15069918150c0' 
  AND token = 'r03gnv6LAWPoPRHz+SZllxlw90uZ2B5TNmtkOs+NEos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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