Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '72ad2e439cf241ade63c211abcbd29ffd747c76e51c855ac05f8bae1bbf0942c' 
  AND token = 'I+negpOhhxZi6B5xW+jVDId4a8c8XDU0JxHtP0vEktA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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