Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '059a64218482973f0462d25b24ecfc541aaf39f4a957e1e2401bad0754ad28dd' 
  AND token = 'n6KZPICo27Yo1djncV3SAHkqzqAKNjuy4/hwfB4cMW0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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