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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9133879213b50332902bb4f2f08111a0e28729d05bdcd37081b2efc0debf053f' 
  AND token = 'oGykDDO9o90Zh543YxnjElLyzJj1tpHT3j1ZAh++/oo=' 
  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"
    }
  }
}