Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '929373060449a20b89f24b67c5b98197cbfd786ca8635c5d49011ee01dae3c23' 
  AND token = 'Zmc1aiKBmxMwdCmMUKacyg57MmqeGNYe/Uvu2B7k7Wk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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