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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09055708a085be7b0bad58eee3aa87f0cdc77450eeaef65ad7a6cf37393d1193' 
  AND token = 'aZK+c4pcf6hDoLt93d3eMn8w1zhVuHwn+cHYxGKSlCM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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