Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f294a7b1166a419f87508ed66110ba9aa0199dc32eb10fd3f2dee3226ab7b4d3' 
  AND token = '9eNPPoTuMHorxsQCqWhSd9zCzyXotq3+oXeKnCeD/NA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}