Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07c2a924ad9d5eb3f3a6d632bcca2b461c4f6ab53de5b7bbe73cb912d50e4df5' 
  AND token = 'TDv8kMMwp/eafcKyU1TRlSe2iPidkzK9hsGP1Kcm/oo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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