Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2fa6853d117c4f982a62b2ac6bc194c7bf739e13c768b7b249c31d45b045672' 
  AND token = 'qU4Z6iA7Tml2DGz9m6tnuIVnb3pYAkqKdxrroPIeu+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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