Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5f8e2269a23273309a48381d9798427aec23a2a4787baba4b4931417391d5e13' 
  AND token = 'PBCV3ffxIKBuuwkpxkYkTZHdeaof4x78H/Hl/lyNUbw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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