Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ff87224429bc6eb773471e4ceae7a5f6a0acb1fa496d36cc44a675f43b3ce04' 
  AND token = 'IKSP+sSsyqILsY3dLTSTV7TwOVVRiUle81LrKA4j1A8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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