Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bab4052502f1e3f808f30385194bc3f0cff164dc084a03a98164c950549c111' 
  AND token = 'M1tX+H/AW9lWHbVfIvQZI93Geo/DgZ9G9GrNYNh7RLA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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