Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dccc95d7cd13deaba00a125b5d5054727bf53e833320ee910e068193e7e7448e' 
  AND token = '5UWbggKtC6E97+H/16Q3DiL8V154bnbU+DN0/i+TGbI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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