Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43b95c0f667ccdaab7abae7b1f35840f95ea68ba01cedd985d43860e625c1a12' 
  AND token = 'CL2jGcticb+iA6Jr0i061hraFKdHeoU7SVnQCoC2AtU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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