Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc9815b473c4d2f252c4918bb9e3be55a81a145b4d68898c73cf2cd9660119e3' 
  AND token = 'tSCHFaxqBsx+y86juwBIt+8OAs6ZwVq05hEsTSQwO84=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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