Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9295974633c97a59e2c4aa732c1e0bb050222f94c4a4ce80c72c5373e7252310' 
  AND token = '9IjnlXqOLJ1fX6/cUUyJJBWivYZyS1WASWfNrC08ocI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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