Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65d4518399835dd0927910963358f42fae3df4b7f449892e2011bd2adfecfd9a' 
  AND token = 'odJHxSzGj+60FvZSvQ4ieJhzomvZ3VciOa5l94gWViA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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