Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd465cebbd56e6b26597d832a448b68405287cb082690e6f2e982cf725f6d20a2' 
  AND token = '9aBeCqrk9dG3ik/EWM4TWLswXTJV/+9COQlswXoKRsI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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