Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bdf1efcd135ea78f0db37ad240b921beed69579e265c41ff764a542d3004ff5' 
  AND token = '7jwBLY+MM0KT4SV1DXu8Su51vA2WTSF1rPa3exjqVSo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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