Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9fcb784f40d65dcde0769ce26ea9f4725741a7e9edbac66b03d1425ba321f2f1' 
  AND token = 'UMgeBU/MW4FQuBLC6vTm+htkruYapO6BSNpbAYm6o7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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