Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13282199f347aebdc20e1ba4f4c0033041c0f8efa9da78c0449a9be9e27f0b83' 
  AND token = 'degP4POnR+E8gFr6PICiqeADM9gl+AHNtPXOgW6yeDg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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