Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9896bd0e542887d3b60744b8ee90bc9afcc0105bfe8ce26d65b34ac0b80ec500' 
  AND token = '8xBQMhVgAAoW/pkhnoeJexVTwgR6mBFg92zj3J5N2Qc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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