Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ea5c83f6106900dea2e1b4436161b6f72d106fa3b13058c78f7bd61b25432c5' 
  AND token = 'W8vp2Lr9UF6l5/l/NTphAuHkxm//N8JoYMSwk8uOn3E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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