Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a382b4dbcc35e263bce21d2244e777364ab1099d7aade8af1980ce83898dbf8' 
  AND token = 'zJ6iy2S79SNWBRp0WO69ROSYE4Vqs6sLUw6kABVowo4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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