Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '73133e4a3d05afa28b8f42196b47b3a4449e980ec11c72e1d64f19d90e2a5f02' 
  AND token = '1T636kqVWnys7d0ci0xcirHSRyJ6r8IauqLrWOIFvCA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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