Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e59782b4fcc2ea00f32df1198e56bf2d4cc8161df6411a49aab3e705872710c5' 
  AND token = '76MIZHXccYsFX6w68aIY5/Xz7Zoe8EFXJpFnk7IpcWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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