Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fee19cede94c622d50e4352219c06eb3a9fc1c57d949bc017f0b1e606b8bb986' 
  AND token = '7w565Zi/6h2Xm0Q9KYHPPyxDi13lekGnpexcEhl6CDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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