Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee7cc01b49aa717bd6dbac0f4938332e841b64957bced287979c733cff2c55dc' 
  AND token = '4vVwWyJ6p0v8GrIvjg1NRNJ8fjZAYJ7wcuA/bevsbCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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