Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd7363429dc3c82d925e61d99df75259e2e5969fcc73b10066080366182f6cf9' 
  AND token = 'QKD2v1jXn70c30bmhpp9mFoKJ78Wif4iyn9ek8cYbgs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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