Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '90c61d00da798ea0576fd5ea53bc5b3497fd814089df2868c1eb218ae0410103' 
  AND token = 'IKs2+MtLge3ctrw87Zr1gKgYbK2Vt3WKQevsc3nGzGE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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