Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dac4324881221bfd652565cc37e4a4450604152009f6e1982193080a337e09a0' 
  AND token = 'WzIuLq9+U2h2LD0TERCRR7sz8Ec+ocSGFCryk+p/zcI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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