Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9634b20ad2b06837e3b729c52489aae5c6cab38efe9fa77573f8417354e2b392' 
  AND token = 'rPOpazSAI3Dq8HtQbiYh4zvu4U+Tiom5ByIMtmrCwPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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