Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5809b009f099c607423d69a34d1f5bf123a09afe97800b31e625ed39233267e' 
  AND token = 'erjnl/F8QzhSNApJkq//GD/oe9XChr9YZLNJ8Dlc/Oo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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