Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60cffeee5aac9fd68296bf2c3c6658ee1a9acc6b5788535a1eb22b1ff5f6b608' 
  AND token = 'zntR97Fe+/emdQ0C20oJHFS+FdB2QyUcN9hiBJ1qksQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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