Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7bd125cdf086ee179bec38b9e1a456d9dab05031f544e4fc2f632c16daf73377' 
  AND token = 'wGGNYD19cuGR9BLWS+6T7f3BeJg0DMhCiC/ewOTrWBE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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