Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0bb7e82e686f309dd52fe7a0540a6ba65ba4446ff45a039e945ef82197074a75' 
  AND token = 'BMDLiLKt4cM/QtBj5Tvu9Oxjrg66F9uQk14qLfct6xY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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