Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9aabc6dc0cf44a40070286bae182b4c161378505a2951e0fcbfab2658088e96c' 
  AND token = 'r++OzET9m6glilgSmaEUJC3MuiaXQwIiDnB6ffoMrFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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