Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e953a019e1935473271c30d2aaa8be61e19f2c2ed98cdeea1b1d167b762301c' 
  AND token = 'OVedmsBwzg3o/OiU/POHsOZzgzR0QYiLxCdgmtZYnHE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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