Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01c40b391cee67c3900b8e4217bb6429b0aa3174caff3b82ebba3dddbdc4e663' 
  AND token = 'Pson99r+ctiyUsPIP/GWGe2uUficbeb99kboD4EKfBE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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