Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '101d56c1f0b14c6ea9a65ecd7e014a837589e90aa865231e85a5e5fde3f0cb9f' 
  AND token = '9fjuCnw3UpCnuTUalZy+w0Tl94nsQ7T+P4yvNLtSnoM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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