Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5032bd82b447634ba644d0f20ec2ef6f41f0bac630ff660284ff157e4662c476' 
  AND token = 'pwcty7qdwGoOqiQzQ2Rum3MzxDNhUiEyv1elWh3mN+8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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