Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce593d6be984b96ce0846196ffbe2764604cdb09d28678f69cfcc959e426c5db' 
  AND token = 'mKLlZR8uXamJCVAURaNTPGwj8Jtd8cCDlTloj2kflYg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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