Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '571f16f33a618988cfc0763ef08691c0129ff1ca92e29da8abf118759e4b04f8' 
  AND token = 'Z7D51NqjQ4TK5924gRVmGoavafX/KWk1FeA2CWB7Fbo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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