Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0951b7c97b9b9fd4705129d082e7796cc6b4d35d16eb870e5383b54fc2c0ff37' 
  AND token = 'fLAa1I1kCW4Vo/GI+4xnS5SQg78HRG4T0tReIOmzSeo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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