Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ac868907d22e07808e430f30f39540f1f7ce739f51d245751c0396d537283bb' 
  AND token = 'VMA3WI+sQ4lAa9nsTskqp+/ZMIo3nCP1ZXwb69+4T2A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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