Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c7c3eb139c60dff7d6b1e967c3485a60c578cc03c20e67b5fe289df8a63d00b' 
  AND token = 'vuAqopx1iCG6X4qQJY33pnX95B30LA0v7MbyMaOTnKM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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