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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e88d43ea99bc5cff671bd9b24eccbfc24053e789a9c3275e9b86fe69b7b0e55' 
  AND token = 'AXizj7ib7hnJ/swdC6TWCbG4A779rplH8gdzNDddyVk=' 
  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"
    }
  }
}