Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '135a5e7180e19424996d584febe5a7ac28cfedda20162303254994f5792ae067' 
  AND token = 'ELvO+WZ3W0YuQJUTBrM82i6aa1Ggt647suA3ovt3q3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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