Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d2ca16e561653c4162b3d1c72f1fe360c3b196965fc14af2a6daae57a9390d0' 
  AND token = '1ZHWr746G0qddDL0iOnCxabBwpF2IjZMPPheeYeXPy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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