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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24f245e92f74786b357e26ff92d63e9dd5876c735e4450176fb3546308778e96' 
  AND token = 'TynyyntpMl5QmkUYMbRXjbKTJNkh25tvicxaoH5c+6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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